Improvement in devices for turning machine-needle blanks



E. SAUTER. V Dev i( :e for Turning Machine-Needle Blanks. No. 160,233Patented Feb. 23, 1875 I THE GRAPHIC C0.PHOTO ,-LITH.39&4I PARKPLAGE,N-Y.

UNITED STATES PATENT Orrron.

EDWARD SAUTER, OF BIRMINGHAM, CONNECTICUT.

IMPROVEMENT IN DEVICES FOR TURNING MACHINE-NEEDLE BLANKS.

Specification forming part of Letters Patent No. 160,238, dated February23, 1875; application filed December 26, 1874.

To all whom it may concern:

Beit known thatI, EDWARD SAUTER, of Birmingham, in the county of NewHaven and State of Connecticut, have invented a new Improvement inMachine for Turning-Needles; and I do hereby declare the following, whentaken in connection with the accompanying drawings and the letters ofreference marked thereon, to be a full, clear, and exact description ofthe same, and which said drawings constitute part of this specification,and represent, in

Figurel, plan or top view; Fig. 2, side view Fig. 3, sectional planview.

This invention relates to an improvement in the device for guiding thetool in machines for turning needles, designed more especially for themanufacture of sewing-machine needles.

In the machines for turning needles, as usually constructed, the cutteris guided along the blank by a fixed former, and, after making the out,returns along the same former; hence the cutter drags on the needle, andleaves a mark, defacing the needle.

The object of this invention is to allow the tool to fall back from theneedle after it has performed its work, and, returning to the place ofbeginning, be automatically reset for turning another needle.

The invention consists in a jointed foot arranged on the tool stock orholder, (which foot rides upon the former to hold the tool up to itswork as it is moved along to make its out, but on the return of the toolthe said foot turns to allow the tool-holder to fall back,) combinedwith springs to make the action of the foot automatic.

A is the tool holder, carrying the tool a, set upon the stock B, andmade adjustable by a screw-nut, C, in'the usual manner. D is the former,lying in rear of the stock B, parallel to the needle 65 being turned,and so that as the tool-stock is moved along the tool will be forced outand in according to the irregularities of the former, theseirregularities corresponding to the shape of the needle from shank topoint; hence the needle will be brought to the required shape by thecutter thus guided.

So far this is substantially the usual construction. After the cutterhas done its work upon the needle, it returns to the place of be ginningbefore the wrought needle is removed; hence it will necessarily dragback along the surface of the needle, leaving a mark thereon, whichmust, by subsequent operation, be removed. To avoid this difficulty Ihang a foot, 6, in the tool stock or holder upon a piv ot, n, whichrides against the former D, as seen in Fig. 3, and as the tool is movedin the direction denoted by the arrow the foot takes a bearing in thetool-stock against one side, m, and forms the Working point against theformer, to guide the tool but on the return of the tool-stock thefriction between the foot and former will turn the foot to one side, as

denoted in broken lines, Fig. 3, bringing the heel of the foot incontact with the former. The heel is cut back or shortened, so that thefoot in turning upon the heel allows the cutter-stock to be forced backby the spring F, or other device for that purpose. This takes the toolaway from the needle during its return; but as soon as it again startsfor its out upon another needle, the foot will turn back against itsbearing m, and force the tool up to its work. To insure the return ofthe foot against its bearing m, a spring, 8, is introduced to force itback; but this spring must not be so strong as to prevent the foot beingturned to its heel by the friction between the foot and former.

By this improvement the tool will automatically draw back and reset foreach out.

In machines where a cutter-stock is not used, but the tool-holderallowed to run directly against the former, the foot will be applieddirectly to the holder; therefore, in using the expression tool-holder,I wish to be understood as meaning that part of the machine throughwhich the tool is guided by the former.

I claim In a machine for turning needles, the combination of the formerD, the tool-holder, and the foot 0, having its heel cut back, asdescribed, hung therein with the springs S and F, substantially as andfor the purpose specified.

EDWARD SAUTER.

Witnesses:

JOHN G. LENHARDT, A. LEININGER.

